What happens when a saturated solution is heated?

$A$ child wanted to separate the mixture of dyes constituting a sample of ink. He marked a line by the ink on the filter paper and placed the filter paper in a glass containing water as shown in the figure. The filter paper was removed when the water moved near the top of the filter paper.
$(i)$ What would you expect to see,if the ink contains three different coloured components?
$(ii)$ Name the technique used by the child.
$(iii)$ Suggest one more application of this technique.

How is a pure substance different from a mixture?

$A$ mixture of sulphur and carbon disulphide is

When is a solution said to be saturated? How can you change an unsaturated solution to a saturated solution without adding any more solute to it?

State whether the following statement is true or false:
The properties that can be observed and specified are called physical properties.